*{
	padding: 0;
	margin: 0;
}
table{
	width: 500px;
	margin: 0 auto;
	margin-top: 200px;
}
tr{
	height: 50px;
}
label{
	font-family: "微软雅黑";
	font-size: 18px;
	font-weight: bold;
}